The Middle Arsenalnaya Tower is a Kremlin tower, built in 1495. It is located on the northwestern side of the Kremlin wall and overlooks the Alexander Garden. It is situated on the spot of a corner tower dating from the reign of Dmitry Donskoi. It was given its present name, the Middle Arsenal Tower, after the Arsenal was completed in the mid-18th century. Originally, it was called the Faceted Tower because of the shape of its facade. In 1680, an open lookout with a small pyramid-shaped top was added to the tower. In 1821, when the Alexander Garden was laid out, an ancient-style grotto was built at the foot of the tower, designed by Osip Bove.